Attachment for lace or fabric making machines



Sept. 14, 1937. c. L. A. DIAMOND ATTACHMENT FOR LACE OR FABRIC MAKING Mz XCHINES Filed Dec. 21, 1936 ATTORNEYS Patented Sept. 14, 1937 UNITED STATES PATENT oFFicE ATTACHIVIENT FOR LACE R FABRIC MAK- I ING MACHINES at's L. A. Diamond, Newburgh, N. Y. Application December 21, 1936, Serial No. 117,080

Claims.

This invention relates to attachments for lace or fabric making machines of the character wherein the warp is advanced a predetermined distance on each operation of the windup tackle *5 of the machine toform a pattern composed of lines of threads extending diagonally of the warp threads and intwodirections, with the diagonally arranged threads relatively'spaced and extendflo ing in a straight course. The invention has for 1'0 its primary object the provision of an attachment which-may be readily adapted to a machine of theab'ovefstated character which will arrange thediafgonal threads in a'wavy or serpentine course, thereby presenting in the fabric or lace a new and artistic pattern which will be attractive and'-ple'asing to view. i

With these and other objects in view, this invention consists'in c'ert'ai n' novel features of construction, combination and arrangement of parts to be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had to the following description and accompanying drawing, in which Figure 1 is an end elevation partly in section illustrating an attachment for a lace or fabric making machine and constructed in accordance with my invention.

Figure 2 is a fragmentary front elevation illustrating the attachment.

7 Figure 3 is a plan view illustrating an arm 1 and a cam roller carried thereby.

Figure 4 is an end view partly in section showing a modified form of my invention.

- 35 Figure 5 is a, top plan view illustrating a modified form of my invention.

Figure 6 is a plan view illustrating a fabric made by a machine equipped with my invention.

Referring in detail to the drawing, the numeral I indicates a pawl and ratchet mechanism which forms part of a conventional type of a windup tackle (not shown) of a bobbinet or similar weaving machine and 2 indicates a pivotally mounted lever for imparting movement to the pawl and ratchet mechanism when rocked on its pivot by a cam 3 secured to a power shaft 4 of the machine. The parts described are common in machines of the character stated and the windup tackle referred to is for the purpose of advancing the warp a predetermined distance on each operation of the windup tackle and which produces a pattern wherein lines of thread run diagonally of the warp threads with the diagonally arranged lines of thread in a straight course. The diagonally arranged threads are grouped to run in two directions with respect to the warp threads. This pattern is in common use and to produce a pattern as shown in Figure 6 my attachment is adapted to the machine. 7 The attachment isshown at its best in Figures 1 and 2 and may be readily adapted to the machine without alterations to the latter.

' The attachment consistsof a stand 5 mounted in any suitable manner adjacent the power shaft 7 4' of the bobbinet or weaving machine and has journals 6 which rotatably support a shaft 1. Secured to one end of the shaft is a cam 8 engaged by a roller 9 journaled on an arm It). The arm I0 is provided with a clamp H for detach ably securing the arm to the lever 2 adjacent the roller of the arm. A gear I2 is secured to the shaft land secured to the power shaft 4 'is a segmental gear l3'which during its" rotation becomes meshed and unmeshed with the gear l2 and thereby imparts to the gear l2 and shaft 1 an intermittent rotation. Thus it will be seen that the cam. 8 has a step by step movement. This step by step movement is for the purpose of varying the throw of the lever 2 by the cam 3. By varying the throw or distance of travel of the lever 2 during its different rocking move ments by the cam 3 will produce a variable takeup to the warp and consequently cause the diagonally arranged threads when woven with the warp threads to assume a wavy or serpentine course which produces a pattern in the lace or fabric as shown in Figure 6. The diagonally arranged threads being drawn closer to the threads adjacent thereto at some places in the cloth and farther apart in other places of the cloth gives or produces the wavy or serpentine effect to the pattern.

A brake drum M is secured to the shaft I and surrounding said brake drum is a split brake band 15 supported on the stand 5 by a bracket IS. A bolt I1 is carried by the split ends of the band whereby the latter may be adjusted to increase and decrease its frictional engagement with the brake drum. The brake drum and brake band provide a brake for the shaft 1 for the purpose of preventing the shaft from rotating when the segmental gear is disengaged from the gear l2, thereby maintaining proper timing of the cam 8 with respect to the timing of the cam 3.

Instead of employing the segmental gear l3 and the gear !2, a disc 53 may be secured to the shaft 1 and is provided with circularly arranged pins 59 and secured to the power shaft 4 is a collar 20 having a pin 2| which during the rotation 55 7 10 brings about the variable throw to the lever 2 during each of its movements by the cam 3.

An. attachment of the character described is simple in construction and may be readily adapted to a weaving machine of any well known charac-.

ter and will effectively change the design or pattern in the fabric made by'said machine without interfering with the speed of operation of the machine and consequently will not interfere with the amount of output of fabric from the machine.

Having described the invention, I claim:

1. In combination with a weaving machine having a warp windup tackle for advancing the warp for a predetermined distance during each operation of the tackle and including a pivotally mounted cam actuated device for operating said windup tackle, a shaft, means for intermittently driving said shaft by the weaving machine, a cam secured to said shaft and means connected to said 7 device and engaging the cam for varying the action of said device on the windup tackle to cause a variable advancement of'the'warp.

'2. In combination with a weaving machine having a Warp windup tackle for advancing the warp for a predetermined distance during each operation of the tackle and including a pivotally mounted cam actuated device for operating said windup-tackle, a shaft, means for intermittently driving said shaft by the weaving machine, a cam secured to said shaft, an arm secured to said device, and a roller journaled on said arm and riding on the cam for varying the action of said device on the windup tackle to cause a. variable advancement of the warp.

3. An attachment for lace making machines comprising a stand, a shaft journaled on said stand, means for connecting said shaft to .a Weaving. machine for the intermittent rotation of the shaft, a cam secured to smegma, an arm connected to an operating deviceof a windup tackle of said machine and contacting the cam for varying the action of said device on the windup tackle to cause a variable advancement of the Warp; V V 4. An attachment for lace making machines comprising a stand, a shaft journaled on' said stand, means for connecting saidshaft to a weav-' ing machine for the intermittent rotation of the shaft, a cam secured to said shaft, an arm connected to an operating device 'of a windup tackle of said machine and contacting the cam for varying the action of said, device on the windup tackle to cause a variable advancement of the warp, and an adjustable brake connected to said shaft,

5. In combinationwith a lace-makingmachine including a windup tackle and an operating means therefor to, advance the warp a; predetermined distance during each operation of the; tackle for producing a pattern composed of lines of relatively spaced threads extending diagonally offthe warp' threads, means operated by the machine and con.-

nected tosaid ,operatin g;means for varying .the action thereof on the W1 dup tackle to arrangethe diagonal threads in a serpentine'course I C AR fiS Lie-A 

